Cov Khoom Siv Khoom Siv Yooj Yim ntawm Cov Ntaub Ntawv Hlau

Cov khoom ntawm cov ntaub ntawv hlau feem ntau muab faib ua ob pawg: cov txheej txheem kev ua tau zoo thiab kev ua tau zoo. Qhov uas hu ua cov txheej txheem kev ua tau yog hais txog kev ua yeeb yam ntawm cov ntaub ntawv hlau nyob rau hauv cov kev tsim khoom txias thiab kub ua rau lub sijhawm ua haujlwm ntawm cov khoom siv tshuaj. Qhov zoo ntawm cov txheej txheem kev ua tau zoo ntawm cov ntaub ntawv hlau txiav txim siab nws cov kev yoog raws thiab kev tsim cov txheej txheem tsim khoom. Vim tias cov txheej txheem sib txawv, cov txheej txheem xav tau kuj txawv, xws li kev ua haujlwm weldability, kev zam txim, kev zam txim, kev ua kom sov, kev ua kom sov, kev ua cua sov hauv cov xwm txheej ntawm kev siv Cov khoom siv tshuab, uas suav nrog cov khoom siv neeg kho tshuab, cov khoom siv lub cev, tshuaj lom neeg, thiab lwm yam kev ua tau zoo ntawm cov khoom siv hlau txiav txim siab nws lub neej.

Hauv kev tsim tshuab kev lag luam, cov khoom siv dav dav siv tau siv hauv qhov ntsuas kub thiab tsis muaj zog thiab cov neeg siv, txhua yam khoom siv tshuab yuav ua rau cov khoom siv sib txawv. Lub peev xwm ntawm cov ntaub ntawv hlau kom tiv thaiv kev puas tsuaj hauv kev thauj khoom yog hu ua cov khoom siv neeg txhua yam (lossis cov khoom siv mechanical). Cov tshuab cov khoom siv ntawm cov ntaub ntawv hlau yog cov ntsiab lus tseem ceeb rau kev tsim qauv thiab cov khoom siv xaiv ntawm cov chaw. Nyob ntawm qhov xwm ntawm cov khoom siv tau thov (xws li nro, compression, cyclic cov khoom siv tau rau cov khoom siv hlau yuav tseem sib txawv. Feem ntau siv cov khoom siv neeg kho tshuab suav nrog: lub zog, lub zog, hardness, tougness, ntau yam cuam tshuam tsis kam thiab qaug zog txwv. Txhua lub tsev cov cuab yeej yog tham txog nyias.

1. Lub zog

Lub zog yog hais txog kev muaj peev xwm ntawm cov khoom siv hlau los tiv thaiv kev puas tsuaj (ntau dhau lawm yas deformation lossis pob txha lov) nyob rau hauv lub zog zoo li qub. Txij li thaum thauj khoom ua nyob rau hauv daim ntawv ntawm nro, compression, muaj zog, thiab lwm yam, muaj zog, thiab lwm yam. Hauv kev siv, lub zog tensile feem ntau yog siv los ua qhov ntsuas qhov tseeb tshaj plaws.

2. Yas

Cov yas hloov kho kom muaj peev xwm ntawm cov khoom siv hlau los tsim cov khoom tawg yas (muaj kev puas tsuaj ntxiv) tsis muaj kev puas tsuaj hauv qab.

3.Hhard

Hardness yog ib tug ntsuas ntawm cov tawv tawv lossis cov khoom muag hlau yog. Tam sim no, feem ntau siv cov qauv rau kev ntsuas hardness hauv kev tsim khoom los nias ntawm cov khoom siv nyuaj ntawm cov khoom siv geometric raws li qib degree ntawm indentation.
Cov hau kev feem ntau suav nrog brinell hardness (HB), rockwell hardness (HRB, HRC) thiab vickers hardness (hv).

4. Qaug zog

Lub zog, cov yees siv, thiab tawv tawv sib tham yav dhau los yog txhua cov neeg siv khoom siv cov khoom siv ntawm cov hlau hauv qab. Qhov tseeb, ntau lub tshuab siv tshuab ua haujlwm nyob rau hauv cyclic chaw thau khoom, thiab qaug zog yuav tshwm sim nyob rau hauv cov chaw nyob hauv cov xwm txheej zoo li no.

5. Kev cuam tshuam nyuaj

Lub thauj khoom ua yeeb yam ntawm lub tshuab ib feem ntawm qhov kev cuam tshuam loj heev yog hu ua kev cuam tshuam load, thiab lub peev xwm ntawm cov hlau kom tiv thaiv kev puas tsuaj nyob rau hauv kev cuam tshuam kev cuam tshuam yog hu ua kev cuam tshuam tougnness.